java 如何在java中使用命令行参数接受值
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how to accept values using command line argument in java
提问by Arnold Parge
Possible Duplicate:
What is “String args[]”? in Java
How do you accept values using command line argument in java? Whenever I try to do it, it shows
你如何在java中使用命令行参数接受值？每当我尝试这样做时，它都会显示
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
回答by Grambot
What have you tried? See this block for how to access the argsarray. You'll need to provide more details for why you're getting outofbounds exception, otherwise use this as a template.
你试过什么？有关如何访问args数组的信息，请参阅此块。您需要提供更多关于为什么会出现越界异常的详细信息，否则将其用作模板。
public static void main(String args[]) {
for (int i = 0; i < args.length; i++) {
System.out.println("Argument #" + i + " = " + args[i]);
}
}
回答by Mechkov
from command line:
从命令行：
java MyApp firstParameter secondParameter
In your app;
在您的应用程序中；
public static void main(String[] argv) {
for(String parameter: argv) {
System.out.println(parameter + "\n")
}
}
